MONOSPECIFIC AND BISPECIFIC ANTI-IGF-1R AND ANTI-ERBB3 ANTIBODIES.

摘要

Provided herein are novel monospecific and bispecific antibodies that are useful as anti neoplastic agents and that bind specifically to human IGF-IR and human ErbB3. Exemplary antibodies inhibit signal transduction through either or both of IGF-IR and ErbB3. Exemplary polyvalent proteins comprise at least one anti-IGF-lR binding site and at least one anti-ErbB3 binding site. In certain embodiments the binding sites may be linked through an immunoglobulin constant region. Novel antiErbB3 and anti-IGF-lR antibodies (e.g., monoclonal antibodies) are also provided.